Hydraulic locking valve



FIG. 1 is a side elevational view of a hydraulic locking valve embodying my new design;

FIG. 2 is a top plan view thereof; and _

FIG. 3 is a bottom plan view thereof.

A side elevational view taken from any side other than _that shown in FIG. 1 is identical thereto. 

The ornamental design for a hydraulic locking valve, as shown and described. 